#include <iostream>
#include <cmath>
using namespace std;
int main ()
    {
    int x1;
    int x2;
    cout << "x1=";
        cin >> x1;
    cout << "x2=00000000";
        cin >> x2;
    int r;
        r=abs(x2-x1);
        cout << r;
    return 0;
    }
